COMPMID-3637: Move utility headers from arm_compute to src

Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Change-Id: If9d6fa8c900b68c4b6fd373f2fc1f9abb83ea917
Signed-off-by: Michalis Spyrou <michalis.spyrou@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4145
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Sang-Hoon Park <sang-hoon.park@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/SConscript b/SConscript
index b915557..1b03629 100644
--- a/SConscript
+++ b/SConscript
@@ -178,6 +178,7 @@
 core_files = Glob('src/core/*.cpp')
 core_files += Glob('src/core/CPP/*.cpp')
 core_files += Glob('src/core/CPP/kernels/*.cpp')
+core_files += Glob('src/core/helpers/*.cpp')
 core_files += Glob('src/core/utils/*.cpp')
 core_files += Glob('src/core/utils/helpers/*.cpp')
 core_files += Glob('src/core/utils/io/*.cpp')
@@ -228,11 +229,10 @@
     # build winograd/depthwise sources for either v7a / v8a
     core_files += Glob('src/core/NEON/kernels/convolution/*/*.cpp')
     core_files += Glob('src/core/NEON/kernels/convolution/winograd/*/*.cpp')
-    arm_compute_env.Append(CPPPATH = ["arm_compute/core/NEON/kernels/convolution/common/",
-                                      "arm_compute/core/NEON/kernels/convolution/winograd/",
-                                      "arm_compute/core/NEON/kernels/convolution/depthwise/",
-                                      "src/core/NEON/kernels/assembly/",
+    arm_compute_env.Append(CPPPATH = ["src/core/NEON/kernels/convolution/common/",
                                       "src/core/NEON/kernels/convolution/winograd/",
+                                      "src/core/NEON/kernels/convolution/depthwise/",
+                                      "src/core/NEON/kernels/assembly/",
                                       "arm_compute/core/NEON/kernels/assembly/"])
 
     graph_files += Glob('src/graph/backends/NEON/*.cpp')